Port IsConstructCall optimization to x64 and ARM.

src/arm/codegen-arm.cc

 // Copyright 2006-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 3435 matching lines @@
   // It is a heap object - get the map. Check if the object is a JS array.
   __ CompareObjectType(r0, r1, r1, JS_ARRAY_TYPE);
   answer.Bind();
   cc_reg_ = eq;
 }
 
 
 void CodeGenerator::GenerateIsConstructCall(ZoneList<Expression*>* args) {
   VirtualFrame::SpilledScope spilled_scope;
   ASSERT(args->length() == 0);
-  frame_->CallRuntime(Runtime::kIsConstructCall, 0);
-  frame_->EmitPush(r0);
+
+  // Get the frame pointer for the calling frame.
+  __ ldr(r2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
+
+  // Skip the arguments adaptor frame if it exists.
+  Label check_frame_marker;
+  __ ldr(r1, MemOperand(r2, StandardFrameConstants::kContextOffset));
+  __ cmp(r1, Operand(ArgumentsAdaptorFrame::SENTINEL));
+  __ b(ne, &check_frame_marker);
+  __ ldr(r2, MemOperand(r2, StandardFrameConstants::kCallerFPOffset));
+
+  // Check the marker in the calling frame.
+  __ bind(&check_frame_marker);
+  __ ldr(r1, MemOperand(r2, StandardFrameConstants::kMarkerOffset));
+  __ cmp(r1, Operand(Smi::FromInt(StackFrame::CONSTRUCT)));
+  cc_reg_ = eq;
 }
 
 
 void CodeGenerator::GenerateArgumentsLength(ZoneList<Expression*>* args) {
   VirtualFrame::SpilledScope spilled_scope;
   ASSERT(args->length() == 0);
 
   // Seed the result with the formal parameters count, which will be used
   // in case no arguments adaptor frame is found below the current frame.
   __ mov(r0, Operand(Smi::FromInt(scope_->num_parameters())));
@@ skipping 2912 matching lines @@
 int CompareStub::MinorKey() {
   // Encode the two parameters in a unique 16 bit value.
   ASSERT(static_cast<unsigned>(cc_) >> 28 < (1 << 15));
   return (static_cast<unsigned>(cc_) >> 27) | (strict_ ? 1 : 0);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal